Trait Functor

pub trait Functor<B>: HKT<B> {
    // Required method
    fn fmap<F>(self, f: F) -> Self::Target
       where F: FnOnce(Self::Current) -> B;
}

Required Methods

fn fmap<F>(self, f: F) -> Self::Target

where F: FnOnce(Self::Current) -> B,

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl<A, B> Functor<B> for Option<A>

fn fmap<F>(self, f: F) -> Self::Target

where F: FnOnce(A) -> B,

impl<A, B, E> Functor<B> for Result<A, E>

fn fmap<F>(self, f: F) -> Self::Target

where F: FnOnce(A) -> B,

Implementors